Perspective-view visual runway awareness and advisory display

ABSTRACT

A method of providing a visual runway awareness and advisor display is provided. The method comprises obtaining current craft position and trajectory, determing if a runway is being targeted, and displaying runway alerts and guides on a graphical display with the runway based on the runway being targeted, current craft position and current craft trajectory.

TECHNICAL FIELD

The present invention generally relates to graphical display systemsand, in particular, to visual awareness and advisory displays.

BACKGROUND

A runway intrusion is defined as “any occurrence at an airport involvingan aircraft, vehicle, person, or object on the ground that creates acollision hazard or results in a loss of separation with an aircrafttaking off, intending to take off, landing, or intending to land.” FAAORDER 7210.58. These occurrences can cause serious harm, includingdeath. Naturally, runway intrusions are a major safety issue foraviation. As can be expected, these intrusions are more likely to occurwhen flight crews are unfamiliar with the airport environment. Due tothis unfamiliarity, flight crews may lose overall awareness of theircurrent position and cause a runway intrusion.

Ideally, all flight crews will be trained to be familiar with allairports. However, considering the vast number of airports, this is nota realistic solution. With the many changes in the airline industry andflight routes, even highly experienced flight crews can find themselvesat an unfamiliar airport. Additionally, even if the flight crew isfamiliar with a particular airport, they may still lose overallawareness of their current position due to low visibility conditions.

For the reasons stated above, and for other reasons stated below whichwill become apparent to those skilled in the art upon reading andunderstanding the present specification, there is a need in the art fora graphical display system which will aid flight crews in maintainingoverall awareness of their current position at unfamiliar airports andin low visibility conditions.

SUMMARY

Embodiments of the present invention solve the problem of providing agraphical display system which will aid flight crews in maintainingoverall awareness of their current position at unfamiliar airports andin low visibility conditions.

In one embodiment, a method of providing a visual runway awareness andadvisor display is provided. The method comprises obtaining currentcraft position and trajectory, determing if a runway is being targeted,and displaying runway alerts and guides on a graphical display with therunway based on the runway being targeted, current craft position andcurrent craft trajectory.

In another embodiment, a graphical display system is provided. Thegraphical display system comprises one or more sensors for obtainingdata, wherein the data obtained includes position and trajectory datafor a craft and airport data, and a display element for displayinggraphics and data. The graphical display system also comprises at leastone processor coupled to the one or more sensors, wherein, based on datareceived from the one or more sensors regarding craft position andtrajectory relative to an airport, the at least one processor determinesif a runway is being targeted and selects which runway guides and alertsto display based on data obtained and runway selected. The at least oneprocessor also sends signals to the display element to display thetargeted runway with the selected runway guides and alerts.

In another embodiment, a computer readable medium havingcomputer-executable instructions for performing a method of providing avisual runway awareness and advisory display is provided. The methodcomprises receiving craft position and trajectory data, receiving runwaystatus data, and determing when a runway is being targeted. The methodalso comprises selecting runway guides and alerts to display with atargeted runway based on runway status of the targeted runway, craftposition, and craft trajectory. The method also comprises displayingrunway guides and alerts on a graphical display with the targetedrunway.

In yet another embodiment, a graphical display system is provided. Thegraphical display system comprises means for obtaining data, whereindata includes airport data, and craft position and trajectory data. Thegraphical display system also comprises means for determining if arunway is being targeted, and means for displaying runway guides andalerts based on the data obtained and a runway being targeted.

DRAWINGS

FIG. 1 is a flow chart showing a method for providing a visual runwayawareness and advisory display according to one embodiment of thepresent invention.

FIG. 2 is a block diagram of a graphical display system according to oneembodiment of the present invention.

FIG. 3 is an image of a graphical display system according to oneembodiment of the present invention.

FIG. 4 is an image of a graphical display system according to oneembodiment of the present invention.

FIG. 5 is an image of a graphical display system according to oneembodiment of the present invention.

FIG. 6 is an image of a graphical display system according to oneembodiment of the present invention.

DETAILED DESCRIPTION

In the following detailed description, reference is made to theaccompanying drawings that form a part hereof, and in which is shown byway of illustration specific illustrative embodiments in which theinvention may be practiced. These embodiments are described insufficient detail to enable those skilled in the art to practice theinvention, and it is to be understood that other embodiments may beutilized and that logical, mechanical and electrical changes may be madewithout departing from the scope of the present invention. Furthermore,it will be understood by one of skill in the art that although thespecific embodiments illustrated below are directed at aircraft forpurposes of explanation, the method and apparatus may be used in variousembodiments employing various types of crafts, such as space shuttles,helicopters, and unmanned air vehicles (UAV), etc. Moreover, embodimentsof the present invention are suitable for use on CRT, LCD, plasmadisplays or any other existing or later developed display technology.

It should also be understood that the exemplary method illustrated mayinclude additional or fewer steps or may be performed in the context ofa larger processing scheme. Furthermore, the method presented in thedrawing figures and specification are not to be construed as limitingthe order in which the individual steps may be performed. Instructionsfor carrying out the various methods, process tasks, calculations,control functions, and the generation of display signals and other dataused in the operation of the display system are implemented in softwareprograms, firmware or computer readable instructions. These instructionsare typically stored on any appropriate medium used for storage ofcomputer readable instructions such as floppy disks, conventional harddisks, CD-ROM, flash memory ROM, nonvolatile ROM, RAM, and other likemedium. The following detailed description is, therefore, not to betaken in a limiting sense.

Embodiments of the present invention not only enable flight crews tomaintain overall awareness during low visibility conditions but alsoenable flight crews who are unfamiliar with an airport to maintainoverall awareness of their current position. Embodiments of the presentinvention accomplish this through an intuitive and easy to understandvisual display. For example, embodiments of the present inventionfacilitate identifying targeted runways on final approach and visuallyindicate if a targeted runway is in a flight plan and if the craft hasclearance to use a targeted runway. Additionally, embodiments of thepresent invention inform flight crews of runway distance remaining anddisplay guides and warnings to aid flight crews in maintaining overallposition awareness. Guides and warnings are gradually faded into adisplay to reduce distraction to the flight crews. Hence, flight crewswill better be able to avoid dangerous runway intrusions while taxiing,landing, and taking off through embodiments of the present invention.

FIG. 1 is a flow chart showing a method for providing a visual runwayawareness and advisory display according to one embodiment of thepresent invention. At 102, the current position of a craft is obtained.Various means are used to obtain current craft position. In someembodiments, global positioning satellite (GPS) receivers are used. Inother embodiments, VHF omnidirectional range (VOR) signals are used. Inother embodiments, other means known to one of skill in the art are usedto obtain current craft position. At 104, airport data is obtained.Airport data includes data regarding the position, size, and location ofrunways at an airport. Airport data is retrieved from a database ofairports based on the craft's current position obtained at 102. In someembodiments, an airport database is located on-board the craft. In otherembodiments, an airport database is located in a remote site, such as acontrol tower, and data is transmitted to the crat via telecommunicationtechnology known to one of skill in the art. Airport databases aredescribed in more detail below with regards to FIG. 2.

At 106, the current position and trajectory of the craft are obtained.Trajectory includes data regarding the craft's heading, track andintended flight path according to a flight plan. At 108, a conformalperspective-view of the airport and runways is graphically generated anddisplayed on a display based on the airport data from an airportdatabase and the current position and trajectory of the craft. In someembodiments, the graphically generated conformal view contains actualphotographs. In other embodiments, the graphically generated view iscomprised only of computer rendered images. In some embodiments, theconformal perspective-view of the airport and runways is integrated intoa primary flight display (PFD).

At 110, it is determined if the craft is targeting a runway. Targeting arunway includes, but is not limited to, approaching a runway for thepurpose of landing, approaching a runway for the purpose of taking off,and approaching a runway while taxiing on the ground. In someembodiments it is determined that a craft is targeting a runway whenflight path markers are pointing at a runway for an extended period oftime. Flight path markers are shown and described in more detail inregards to FIG. 3 below. In other embodiments, it is determined that acraft is targeting a runway when a flight plan indicates a particularrunway is to be used. In yet other embodiments, it is determined that acraft is targeting a runway when the trajectory of the craft is pointingtoward the runway and the craft is in close proximity to the runway. Instill other embodiments, it is determined that a craft is targeting arunway when the craft's trajectory is substantially aligned with therunway bearing and the craft is in close proximity to the runway.

If a craft is not targeting a runway, the process returns to 106 whereupdated position and trajectory data is obtained. If a craft istargeting a runway, appropriate runway guides and alerts are displayedat 112. Runway guides include, but are not limited to, touch down pointmarkers, threshold markers, distance remaining markers, and runwayidentifiers. Touch down point markers and threshold markers are shownand described in more detail in regards to FIG. 4 below. Runway alertsare visual messages indicating position of the craft relative to atargeted runway and runway status warnings. Runway status warnings arevisual messages including, but not limited to, active status warnings ofa targeted runway, and insufficient distance remaining on a targetedrunway.

Runway guides and alerts to be displayed are selected based on theposition and trajectory of the craft in relation to a runway and thestatus of the runway. In some embodiments, runway guides change colorsand are accompanied by runway status warning messages when necessary towarn flight crews of potential dangerous conditions. In someembodiments, when the aircraft is approaching from the air and takingoff from a selected runway, a distance remaining marker is shown toindicate the available runway length ahead. In some such embodiments,the distance remaining marker is shown on both sides of the runway. Insome embodiments, the distance remaining markers are displayed in aperspective visual format which flight crews a sense of motion andvelocity, as well as informs a flight crew of the distance remaining. Ifinsufficient distance remains on the runway, the distance remainingmarker changes color in some embodiments. Additionally, in someembodiments, runway status warnings fade onto the display to warn flightcrews that insufficient distance remains on the runway.

Additionally, in some embodiments, when an aircraft nears or crosses arunway, runway identifiers are displayed indicating the runwayidentification number of both the runway being crossed and the runway onwhich the aircraft is traveling, if any. In some such embodiments,runway identifiers are displayed on the runway as if painted on thepavement of the runway. In other such embodiments, runway identifiersare displayed near the runway. In some embodiments, such as when anaircraft is targeting a runway on final approach, runway identifierswith just runway identification numbers are displayed on the runway in aconformal perspective-view format. In some such embodiments, the runwayidentifiers are not displayed on the runway until the aircraft reaches athreshold point. In one embodiment, the threshold point is a setaltitude. In another embodiment the threshold is a set distance from therunway.

In some embodiments, a runway identifier is only displayed for atargeted runway. In other embodiments, runway identifiers are displayedon all visible runways as if painted on the pavement when a craft is inclose proximity to an airport. In some embodiments, runway identifiersinclude both runway identification numbers and positional informationindicating that the craft is approaching, on, or departing a targetedrunway. In some embodiments, runway identifiers are displayed at avisible position on the display near flight symbology. In some suchembodiments, the position of the runway identifiers is changed to reducedistraction to a flight crew based on preferences of the flight crew. Inother embodiments, a runway identifier with just a runway identificationnumber is displayed on a runway, as if painted on the pavement, in aconformal perspective view. In some embodiments, a runway identifiertransitions gradually from a visible position near flight symbology to aposition displayed on the runway in a conformal perspective view. Thistransition occurs as a craft becomes sufficiently close to the runway.The transition rate is determined by the craft's rate of descent, insome embodiments. In other embodiments, the transition rate is based onthe craft's speed and distance from the targeted runway.

Additionally, in some embodiments, the targeted runway is highlighted.Highlighting includes outlining the runway with a colored box in someembodiments. In other embodiments, highlighting includes changing thecolor of the runway pavement. In one embodiment the highlighting colorunder normal circumstances is cyan. In other embodiments, other colorsare used. In some embodiments, the border of the outline box changesthickness based on the distance of a craft from the runway. As the craftis further from the runway, the border is thicker. As the craft nearsthe runway, the border becomes thinner until the thickness matches thethickness of the runway border. In other embodiments, the display sizeand shape of the outline box varies based on the position of the craftin relation to the targeted runway, and based on the surrounding terraindisplayed on the graphical display. In some embodiments, the outline boxtraces the terrain profile surrounding the runway. Additionally, in someembodiments, the brightness of the outline border varies depending onthe position of the craft relative to the targeted runway. As the craftnears the runway, the brightness decreases. Similarly, in someembodiments, the brightness of runway pavement and runway guides, suchas threshold markers and touch down point markers, varies depending onthe position of the craft relative to the targeted runway. In some suchembodiments, the brightness of different runway guides and the runwaypavement color vary independently of each other. In some embodiments,the rate of change, or transition, of the brightness is based on a rateof change in altitude of the craft relative to the targeted runway. Inother embodiments, the transition rate is based on a set time period. Inyet other embodiments, the transition is based on the speed of the craftand the distance from the craft to the targeted runway.

In some embodiments, if it is determined that the runway status of thetargeted runway is active, the color of runway guides changes color towarn the flight crew. In some embodiments, the warning color is yellow.In other embodiments, other warning colors are used. An active runwaystatus indicates that something is already on or using the runway (i.e.there is activity on the runway). This includes, but is not limited to,another craft targeting the runway for take off or landing, anothercraft taxiing on the targeted runway, and ground crews and equipmentlocated on the targeted runway. Active status of the runway isdetermined in some embodiments from data received from a control towerthrough wireless telecommunication techniques known to one of skill inthe art. In other embodiments, active status is determined from sensordata received from sensors on-board the craft. In other embodiments,active status is determined from visual observation of the flight crew.Additionally, in some embodiments, alerts fade onto the display to warnflight crews that the targeted runway status is active. In someembodiments, a targeted runway is compared with a flight plan. At leastone of runway guide colors, pavement colors, and surface textures changeif the runway is not in the flight plan. Additionally, in otherembodiments, it is determined if the craft has runway use clearance. Ifthe craft does not have clearance to use the runway, at least one ofrunway guide colors, pavement colors, and surface textures change.

As described above, embodiments of the present invention identifyrunways; warn flight crews of dangers, such as an active runway status;and improve the visibility of selected runways through highlighting andbrightness changes. Hence, embodiments of the present invention enableflight crews to navigate in low visibility conditions and maintainoverall awareness when at an unfamiliar airport due to the runway alertsand guides. Additionally, the fading in and out of alerts and guidesoccurs gradually. In some embodiments, the transition is based on a settime period. In other embodiments, the transition is based on a rate ofaltitude change. In other embodiments, the transition rate is based onthe speed of the craft and the distance to a targeted runway. Thisgradual transition reduces distraction to flight crews caused by suddenchanges in a flight display. Additionally, the position of the alertsand guides is capable of being adjusted to preferences of a flight crewto further reduce distraction to a flight crew. Exemplary embodiments ofrunway alerts and guides, as described above, are shown and explained inmore detail with regards to FIGS. 3-6.

FIG. 2 is a block diagram of a graphical display system according to oneembodiment of the present invention. In FIG. 2, an exemplary graphicaldisplay system 200 includes processor 206 configured to provide data todisplay element 210 for display. One or more data sources are coupled toprocessor 206 via bus 214. These data sources include, but are notlimited to, sensors 202, user input element 212, database 204, andprogram memory 208. In some embodiments, one or more of these datasources are omitted. In some embodiments, processor 206 uses dataobtained from sensors 202 in determining current aircraft position. Inother embodiments, data from sensors 202 is used for display on displayelement 210 such as altitude, attitude, speed, etc. Sensors 202 include,but are not limited to, gyroscopes, accelerometers, magnetometers,global positioning system (GPS) receivers, infrared cameras, laserimagers, radars, etc.

User input element 212 includes, but is not limited to, keyboards, touchscreens, microphones, etc. In some embodiments, user input element 212comprises more than one type of input element. In other embodiments,display system 200 does not include user input element 212. User inputelement 212 is used, in some embodiments, to enable flight crews toselect and obtain information regarding runways at an airport. Inaddition, user input element 212 is used, in some embodiments, to selectthe airport runway to be targeted.

Program memory 208 includes any type of suitable medium such as floppydisks, conventional hard disks, CD-ROM, flash memory ROM, nonvolatileROM, RAM, or other suitable medium. Processor 206 and program memory 208are coupled together allowing processor 206 to write to and store datain program memory 208 as well as retrieve stored data from programmemory 208. In one embodiment, program memory 208 stores data fromsensors 202 and user input element 212. In other embodiments, programmemory 208 stores data to be transmitted from processor 206 to displayelement 210.

Database 204 is used to store a database of graphics for retrieval byprocessor 206 and display on display element 210. Database 204 includes,but is not limited to, a navigation database, terrain database, andairport database. In addition to graphics, database 204 is used to storeother data regarding terrain, airports, and navigational aids used fordisplay on display element 210. For example, airport databases includedata regarding runway sizes, identification numbers, and positions. Insome embodiments, database 204 is stored locally on-board the aircraft.In other embodiments, database 204 is stored remotely and transmits datato graphical display system 200 via wireless telecommunicationstechnology known to one of skill in the art. Database 204 includes anytype of suitable medium such as floppy disks, conventional hard disks,CD-ROM, flash memory ROM, nonvolatile ROM, RAM, or other suitablemedium.

Processor 206 includes or interfaces with hardware components thatsupport the graphics display system. By way of example and not by way oflimitation, these hardware components include one or moremicroprocessors, graphics processors, memories, storage devices,interface cards, and other standard components known in the art.Additionally, processor 206 includes or functions with softwareprograms, firmware or computer readable instructions for carrying outvarious methods, process tasks, calculations, control functions, and thegeneration of display signals and other data used in the operation ofthe display system. These instructions include methods for determiningif a runway is to be targeted and for selecting alerts and guides basedon a runway being targeted, and on craft position and trajectoryrelative to the targeted runway. These instructions are typically storedon any appropriate medium used for storage of computer readableinstructions such as floppy disks, conventional hard disks, CD-ROM,flash ROM, nonvolatile ROM, RAM, and other like medium. In someembodiments, these instructions are stored on memory 208.

Processor 206 analyzes data received from sensors 202, user inputelement 212 and database 204. Based on this analysis, processor 206sends signals to display element 210 instructing display element 210 todisplay airport runways, runway guides, and runway alerts, such asalerts indicating insufficient length of runway remaining. Displayelement 210 includes any display element suitable for displaying thevarious symbols and information for the operation of embodiments of thepresent invention. There are many known display elements that aresuitable for this task, such as various CRT, active and passive matrixLCD, and plasma display systems. Processor 206 interfaces with and sendssignals to display element 210 instructing display element 210 whichgraphics and data to display.

FIG. 3 is an image of a graphical display system according to oneembodiment of the present invention. In FIG. 3, an aircraft is targetingrunway 304 by pointing flight path marker 302 at runway 304 for anextended period of time. Runway identifier 306 provides visualconfirmation that the aircraft is targeting runway 304 and identifiesthe runway by its runway identification number, 25L. Runway identifier306 is also displayed with positional information indicating theaircraft is approaching runway 304. Additionally, in some embodiments,runway 304 is outlined with a box providing visual confirmation of therunway being targeted. In some such embodiments, the border thickness ofthe outline box gradually decreases as the aircraft comes closer to thetargeted runway and increases as the aircraft moves away from thetargeted runway. In some embodiments, the rate of transition is based onthe rate of altitude change of the aircraft relative to the targetedrunway. In other embodiments, the rate of transition is based on thespeed of the aircraft and the distance of the aircraft from the targetedrunway. Additionally, in some embodiments the pavement color of runway304 changes providing visual confirmation that the runway is beingtargeted. In some embodiments, the color of the outline and pavementchanges color when the status of the targeted runway 304 is active asdescribed above with regards to FIG. 1.

FIG. 4 is an image of a graphical display system according to oneembodiment of the present invention. In FIG. 4, an aircraft isapproaching runway 402 for landing. As shown, runway 402 is outlined byoutline box 408. Additionally, a touch down point is indicated by touchdown point markers 406. In some embodiments, the pavement color ofrunway 402 is also changed to indicate the runway being targeted. Alsoshown in FIG. 4 are runway identifier 404 and threshold marker 410.Touch down point markers 406 and threshold marker 410 help guide aflight crew to the correct point on runway 402 where an aircraft shouldland (i.e. touch down). In FIG. 4, runway identifier 404 is displayed onrunway 402 as if painted onto the pavement of runway 402 in a conformalperspective view. In some embodiments, the brightness level of outlinebox 408, threshold marker 410, and touch down point markers 406 variesbased on the position of the aircraft relative to runway 402. In somesuch embodiments, the brightness level decreases as the aircraftaltitude decreases relative to runway 402. In other embodiments, thebrightness level decreases as the distance between the aircraft andrunway 402 decreases. Additionally, in some embodiments the thickness ofoutline box 408 varies based on the position of the aircraft relative torunway 402 as described above with regards to FIGS. 1 and 3.

FIG. 5 is an image of a graphical display system according to oneembodiment of the present invention. In FIG. 5, an aircraft is taxiingor on the ground. The aircraft is targeting runway 502, in FIG. 5. It isdetermined that an aircraft is targeting runway 502, in FIG. 5, due tothe close proximity of the aircraft to runway 502 and the trajectory ofthe aircraft crosses runway 502. Runway identifier 504 gradually fadesin to identify runway 502 by its runway identification number, 25L, andis displayed with positional information to indicate that the aircraftis approaching runway 502. As the aircraft crosses over runway 502,positional information displayed with runway identifier 504 changesgradually to indicate that the aircraft is on runway 502. For example,in one embodiment, runway identifier 540 displays ‘on rwy 25L’ in FIG. 5to indicate when the aircraft is on runway 502. As the aircraft exitsrunway 502, runway identifier 504 changes to indicate that the aircraftis departing runway 502. In some embodiments, runway identifier 504changes once the aircraft has completely exited runway 502. In otherembodiments, runway identifier 504 changes once the aircraft haspartially exited runway 502.

FIG. 6 is an image of a graphical display system according to oneembodiment of the present invention. In FIG. 6, an aircraft is targetingrunway 602 because the aircraft is in close proximity to runway 602 andthe trajectory of the aircraft is substantially aligned with the bearingof runway 602. Runway identifier 604 indicates that the aircraft is onrunway 602 and indicates the runway identification number of runway 602.In some embodiments, runway identifier with just the runwayidentification number of runway 602 is painted onto runway 602 in aperspective conformal view.

Distance remaining markers 606 indicate the distance remaining on runway602 measured from a far end of runway 602 in front of the aircraft. Asshown, in some embodiments, distance remaining markers 606 are displayedin a perspective conformal view. In a perspective conformal view,distance remaining markers 606 help give a flight crew a sense of motionand speed. In some embodiments, distance remaining markers 606 aredisplayed in a perspective view at fixed positions along runway 602. Insuch embodiments, distance remaining markers 606 will grow larger orsmaller as the craft draws closer or further away from the fixedposition along runway 602. In other embodiments, distance remainingmarkers 606 are displayed in a perspective view at positions relative tothe current craft position. In such embodiments, the display positionsof distance remaining markers 606 change according to movement of thecraft in order to maintain the positions relative to the current craftposition rather than relative to a fixed position along runway 602. Inyet other embodiments, the distance remaining on a runway is displayedin a numerical readout. In some embodiments, such as during landing ortake off, the color of distance remaining markers 606 changes or flashesto warn a flight crew if insufficient distance remains for the aircraftto safely complete its task. Additionally, in some embodiments, alertsfade into the display in FIG. 6 to indicate insufficient distanceremaining.

Although specific embodiments have been illustrated and describedherein, it will be appreciated by those of ordinary skill in the artthat any arrangement, which is calculated to achieve the same purpose,may be substituted for the specific embodiment shown. For example,although the specific embodiments illustrated are directed at aircraft,the method and apparatus may be used in various embodiments employingvarious types of crafts, such as space craft, helicopters, and UAVs,etc. This application is intended to cover any adaptations or variationsof the present invention. Therefore, it is manifestly intended that thisinvention be limited only by the claims and the equivalents thereof.

1. A method of providing a visual runway awareness and advisory display,the method comprising: obtaining current craft position and trajectory;determining if a runway is being targeted; and displaying runway alertsand guides on a graphical display with the runway based on the runwaybeing targeted, current craft position, and current craft trajectory. 2.The method of claim 1, wherein determining if a runway is being targetedincludes: detecting a flight path marker pointing at a runway on adisplay for an extended period of time.
 3. The method of claim 1,wherein displaying runway alerts and guides includes at least one of:fading in runway alerts and guides for a targeted runway; displayingperspective runway distance remaining markers at fixed display positionsalong the displayed runway; displaying perspective runway distanceremaining markers at positions relative to current craft position,wherein the display positions of the distance remaining markers changeaccording to movement of the craft in order to maintain the positionsrelative to the current craft position; and displaying runway distanceremaining in a numerical readout.
 4. The method of claim 3, whereinfading in runway alerts and guides includes: fading in runwayidentification numbers on a surface of the targeted runway in aperspective conformal view format.
 5. The method of claim 1, whereindisplaying runway alerts and guides includes highlighting runway guidesfor a targeted runway.
 6. The method of claim 5, wherein highlightingrunway guides for a targeted runway includes adjusting brightness levelsof runway guides based on the position and trajectory of the craftrelative to the targeted runway.
 7. The method of claim 1, whereindisplaying runway guides and alerts for a targeted runway includesoutlining the targeted runway with an outline box.
 8. The method ofclaim 7, wherein outlining the targeted runway with an outline boxincludes at least one of: varying the border thickness of the outlinebox based on the position of the craft in relation to the targetedrunway; and varying the display size and shape of the outline box basedon the position of the craft in relation to the targeted runway, andbased on the surrounding terrain displayed on the graphical display. 9.The method of claim 1, wherein displaying runway guides includeschanging the color of guides gradually to indicate dangerous conditionson a targeted runway.
 10. The method of claim 9, wherein changing thecolor of guides to indicate dangerous conditions includes at least oneof: changing the color of distance remaining markers to indicateinsufficient distance remains on a targeted runway; comparing thetargeted runway with a flight plan and, when the targeted runway is notin the flight plan, changing at least one of: runway guides colors,pavement colors, and surface textures; and determining if the targetedrunway has runway use clearance and, when the targeted runway does nothave runway use clearance, changing at least one of: runway guidescolors, pavement colors, and surface textures.
 11. A graphical displaysystem, comprising: one or more sensors for obtaining data, wherein thedata obtained includes position and trajectory data for a craft andairport data; a display element for displaying graphics and data; and atleast one processor coupled to the one or more sensors, wherein, basedon data received from the one or more sensors regarding craft positionand trajectory relative to an airport, the at least one processordetermines if a runway is being targeted, selects which runway guidesand alerts to display based on data obtained and runway targeted, andsends signals to the display element to display the targeted runway withthe selected runway guides and alerts.
 12. The graphical display systemof claim 11, wherein the at least one processor determines if a runwayis being targeted by detecting a flight path marker pointing at a runwayfor an extended period of time.
 13. The graphical display of claim 11,wherein the display element fades runway guides and alerts onto thedisplay according to signals received from the at least one processor.14. The graphical display of claim 11, wherein the processor sendssignals to the display element to adjust the brightness levels of runwayguides and alerts based on the position of the craft relative to thetargeted runway.
 15. The graphical display system of claim 11, whereinthe at least one processor sends a signal to the display element tohighlight runway guides.
 16. The graphical display system of claim 15,wherein a signal to the display element to highlight runway guidesincludes a signal to outline the targeted runway with an outline box.17. The graphical display system of claim 16, wherein the thickness ofborders of an outline box around the targeted runway varies based on theposition of the craft relative to the targeted runway.
 18. A computerreadable medium having computer-executable instructions for performing amethod of providing a visual runway awareness and advisory display, themethod comprising: receiving craft position and trajectory data;receiving runway status data; determining when a runway is beingtargeted; selecting runway guides and alerts to display with a targetedrunway based on runway status of the targeted runway, craft position andcraft trajectory; and displaying runway guides and alerts on a graphicaldisplay with the targeted runway.
 19. The computer readable medium ofclaim 18, wherein determining when a runway is being targeted includesobtaining data from a flight plan indicating a runway is to be targeted.20. The computer readable medium of claim 18, wherein displaying runwayguides and alerts includes changing the color gradually of runway guidesand alerts to indicate dangerous runway status.
 21. The computerreadable medium of claim 18, wherein displaying runway guides and alertsincludes adjusting the brightness levels of runway guides and alertsbased on the position and trajectory of the craft relative to a targetedrunway.
 22. The computer readable medium of claim 18, wherein displayingrunway guides and alerts includes fading in runway guides and alertsgradually.
 23. The computer readable medium of claim 22, wherein fadingin runway guides and alerts gradually includes fading in runway guidesat a rate based on a rate of change in craft position relative to atargeted runway.
 24. The computer readable medium of claim 18, whereindisplaying runway guides and alerts includes highlighting a targetedrunway.
 25. The computer readable medium of claim 24, whereinhighlighting a targeted runway includes gradually changing the color ofthe targeted runway pavement.
 26. A graphic display system, comprising:means for obtaining data, wherein data includes airport data and craftposition and trajectory data; means for determining if a runway is beingtargeted; and means for displaying runway guides and alerts based on thedata obtained and a runway being targeted.